Adjustable reamer.



C. H. MfiL-MEDIEL ADJUSTABLE REAMER.

1 APPLICATION rim!) MAY 6, 1909.

Patented Oct. 4, 19 10;

1'0 all whom it may concern:

nNfrrEo STATES PATENT oFFioE;

CHARLES H. M'ALMEDIEL OF NEW BEDFORD, IMASSACHUSE'I'TS. ASSIGNOR TO MORSE CUVIST DRILL & MACHINE COMPANY. 01: NEW BEDFORD. MASSACHUSETTS.

Specification t Lettei'sTateiit.

ADJUSTABLE REAMERQ Patented Oct. 4. 1.910.

Application filed May 6 1909. Serial No. 494,458.

a iii-1pm. a eitizen ol' the l'iiited States. and :1 resident of \ew liedt'oi'd, in the county of at-curately varied.

llri.-tni and Nate ot' .\lassaehusetts, have inrented a new and useful improvement in Ad u table ltd-liner ol' whieh the following isa peeiti 'ation. 4

My inyeiuion relates to adjustable reamers and its (ll) itt fl is to improve the construction ot' said i-eaniei's in lllP'ltlttlilltYl litlltlll' after set forth whereby their solidity may be inn-eased and their gage conveniently and My invention will he deserihed in connection with the drawings Yllit'll accompany and form a part of this specitieatiou, in

Figure l is a side View ofone form of my improved adjustable l't'tllllt'l' partly iii section, Fig. 2 is an end \'iew of the reainer shown in- Fig. I. Fig. 3 i a tra'usvewe sec tion on theliue 'li-st-l of Fig. 'l xliig. 4 is a ti.-insverse section on the line -t----4- of l' i". 1. t P v Fig. 5 is a side view of one of the eutting blades. Fig. 13 is an end view of the cutting blade shown in Fig. 5.

In the drawings selected foi illustrating the particular enilmdiineiits of my invention herein disclosed. t represents a stock having an enlarged forward portion constit'uting a head 1' provided with a plurality of longitudinal and radial slots .2, herein shown as eight in number, the bottom of each slot being inclined with respect to the central axis of the stock. A cutting blade 3 of suitable cross-section, shown in the present instance as tapering"towartl thet'op, is

located in each of the. slots and a portion of wi'eiu'h is threaded to thestoelt and engages Said beveled wa sher,

The under side of each blade is In order to prevent, the movement of said washer around the longitudinal axis of the stoek, a key-way 10 taking a key 10 ma y be provided. In order that the ends of the blades may project beyond the forward end of the stock, it. is necessary to secure the blades to the forward eiid of the stock by means eoi'iperatiiig with the underside of the blades, and this I aeconiplish in the present instance by providing the under side of eaeh blade with a beveled portion with which the correspondingly beveled supporting washer 6 cooperates. This washer is provided with as many longitudinally extending slots 6 a's there are blades and the forward portion of each blade rests in one. of said slots. lock-nut- 7, which may be provided with slots Sfor a \i'reiich. is threaded to the forward end of tl estoek and the key 9 may be employed 'to prevent the washer ti from turning about the stock.

vWhen it is desired to increase the gage 'of the reainer, the forward not 8 is loosened and the rear not 5 is turned in such direction as to more the blades siinnltaneonslj forward until the reainer has the desired diaineter whereupon the not 8 is tightened.

The I To rednee the gage of the i'eaiiiei', the rear I not 5 is loosened and the forward not 8 is turned so as to move the blades siinultane-' tions may be. made iii the particular einbodi:

ineiits of my invention herein described without departing from the principle thereof.

I claim:

In an adjustable reainer. a stock, cutting;

blades each having a beveled portion and a beveled washer eot'ipe'ratiug with'the beveled portionsof said blades, said usher-beiug provided with slots for receiving and supporting the forward ends -oi said blades.

In testimony whereof, I have hereunto subscribed my name this 29th day of April CHARLES H. MALMEDIE. \V it nesses Sam .1. Brass, 7 V

GEORGE l I. ll. ALLEN. 

